Interlocking Flat Vent Tile - Black - Suitable for Marley Modern, Mini Stonewold
If used for Roof Ventilation for 10,000 mm² space every 1 m for 5,000 mm2 space every 2 m. Interlocking Flat Vent Tile - Black. The built-in downpipe allows direct ventilation path into the roof space if required.